These expansion packs are great assortments for beginning to experienced engineers. Each pack comes with a free Builder's Guide, filled with exciting new layouts to expand your favorite Thomas Wooden Railway set. Includes 1 pc 2 Straight Track 1 pc 4 Straight Track 1 pc 6 Straight Track 1 FF Track Adapter 1 pc 3.5 Curved Track 6 pcs Ascending Tracks 2 Ascending Track Risers 2 Stacking Track Risers Thomas Wooden Railway vehicles, track and destinations are not compatible with Take Along Thomas, Take n Play Thomas or Trackmaster Thomas products.